JPH09111816A - Rainwater utilization equipment - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a rainwater utilization device that can extend the life of a purification unit and can be easily maintained by the user. SOLUTION: A stored water tank 2 for storing rainwater, a purifying unit 4 located below the stored water tank for purifying water in the stored water tank, and a purifying unit located below the purifying unit for purifying water purified by the purifying unit. In the rainwater utilization device having the purified water tank 3 to be stored, concave sludge storage portions 11 and 19 are provided at the bottom of at least one of the stored water tank and the purified water tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainwater utilization device for making rainwater usable as domestic water.

[0002]

2. Description of the Related Art Conventionally, rainwater has been utilized in various systems in daily life. As an example thereof, Japanese Patent Laid-Open No. 6-306
As disclosed in Japanese Patent No. 894, a water collecting part for collecting rain on a road surface in a predetermined area, a treatment water collecting part for appropriately purifying and collecting collected rainwater, and a part of a road installed in this area. Some of them consisted of a user department that uses the stored water as fountain water and green belt irrigation water.

However, the use of rainwater in the above device is a fountain,
It is used for irrigation water and is not a device that uses rainwater in ordinary households. Further, as a device for household use, there is JP-A-57-33637, but construction such as underground installation of a water storage tank becomes very large. Also,
As a device for utilizing rainwater with a simple device, the actual Kaihei 4-7
Although there is a publication such as 0465, the contents of the device are as large as a large water bucket, and the rainwater is bad for hygiene.
It was not practical because it was used for watering the garden and cleaning the outside of the house.

Therefore, as a technique for making rainwater more practically usable for domestic use, Japanese Patent Application No. 7-165431.
There is. This has a storage water tank in the upper part, a purification unit in the direction of falling rainwater in the storage water tank, and a purification water tank for storing purified rainwater thereunder.

Recently, there is JP-A-07-026598 as a device for removing sludge from rainwater, but the accumulation condition of sludge cannot be confirmed from outside the apparatus. In addition, there remains a big problem in use that sludge cannot be discharged when water is contained.

[0006]

However, according to this conventional device, inorganic dust or the like remains adhered to the inside of the filter, and when the storage time is long, it becomes sludge at the bottom of the storage water tank and the purification water tank. However, unless it is removed, it stirs again due to the stirring action when rainwater flows in, polluting stored water and purified water, and the sludge easily adheres to the filter of the purification unit. Therefore, the filter is likely to be clogged, and the filtering function is lost early.

The present invention has been made to solve the above problems and is hygienic, can be used as domestic water, can prolong the life of the purification unit, and can be easily maintained by the user. It is a technical subject to provide a rainwater utilization device.

[0008]

The technical means taken in the invention of claim 1 to solve the above-mentioned technical problem is a storage water tank for storing rainwater, and a water tank of the storage water tank located below the storage water tank. In a rainwater utilization device having a purification unit for purifying water, and a purification water tank located below the purification unit for storing water purified by the purification unit, at least one of the storage water tank and the purification water tank has a bottom portion. It was equipped with a sludge reservoir. This is because the dust that has been filtered by the filter and that has flowed into the storage tank floats inside the tank, and gradually accumulates in a gentle flow toward the purification unit, and accumulates in the sludge reservoir. In addition, a small amount of dust that has been filtered by the purification unit and that has flowed into the purified water tank collects in the sludge reservoir in the purified water tank.

More preferably, it is provided with a sludge discharge pipe communicating with the sludge reservoir, and a first sluice valve for communicating and blocking the sludge discharge pipe. In this, the sludge accumulated in the sludge reservoir of the storage water tank and the purified water tank can be discharged by the first partition valve of the sludge discharge pipe.

More preferably, a water distribution pipe that penetrates the bottom of the sludge reservoir and has an upper opening that is higher than at least the bottom surface of the purified water tank, and a second sluice valve that connects and disconnects the water distribution pipe are provided. Is. This allows the purified water in the purified water tank to be taken out from the second sluice valve via the water distribution pipe as required and used.

More preferably, at least a part of the side surface of the sludge reservoir is made transparent.

As a result, the sludge accumulation condition inside the sludge reservoir can be visually observed from the transparent portion.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a rainwater utilizing apparatus 1 showing an embodiment of the present invention.

Rainwater utilization device 1 installed near the house J
Is provided with a stored water tank 2 in the upper part and a purified water tank 3 in the lower part,
Further, a purification unit 4 for purifying the stored water 6 is arranged between these water tanks. A rain gutter 80 for receiving rain water 60 from the roof Y of the house J is provided above the stored water tank 2. In the rain gutter 80, an inflow port 8 connected to the stored water tank 2 is provided. A filter 81 is installed at the inflow port 8 so that light and large foreign matter does not get caught in the filter 81 and flow into the stored water tank 2, and heavy foreign matter settles in the rain gutter 80, and the rain gutter 80
The rainwater on the inner surface flows into the inflow port 8 in order.

A first pipe 5 is provided at a side portion or a lower portion of the stored water tank 2 so as to be connected to a toilet tank (not shown) so that rainwater 6 is distributed to a toilet tank such as a toilet. There is.

In the vicinity of the upper portion of the purified water tank 3, a well-known replenishment valve 9 for detecting the amount of water in order to secure the minimum amount of purified water.
(Ball tap type) is provided, and this replenishment valve 9 is connected to a water pipe via a third pipe 10. The supply valve 9 is provided with a ball 91 that floats on water, and when the water decreases, the ball 91 lowers and the valve opens to supply water from the water pipe. As a result, a fixed amount of water is always maintained in the purified water tank 3.

A second water pipe 50 is provided near the bottom of the purified water tank 3 so that water can be distributed to bath equipment and sink equipment that require clean water. This second water pipe 50
It goes without saying that, like the first pipe 5, water may be distributed to the toilet tank.

Inside the purifying unit 4, a filter material 15 such as bio-activated carbon or ceramic balls for removing dirt and decomposing rainwater dirt components is enclosed. Is home to several types of microorganisms. This microorganism has an action of decomposing organic matter in water into water and carbon dioxide. .

In addition to the filter medium 15 used in the above-described embodiment of the present invention, activated carbon or activated stone,
You may utilize the filter medium 15 which adsorbs a colloidal substance with a porous particle similar to activated carbon like mineral natural stones such as barley stone.

Next, the main part of the present invention will be described.

A sludge discharge pipe 13 having a first sludge reservoir 11 for precipitating sludge and a first sluice valve 12 for draining the sludge deposited in the first sludge reservoir 11 is provided on the bottom surface of the stored water tank 2.
have. The side surface of the first sludge reservoir 11 is made of a visible transparent member. As a result, the sludge accumulation condition can be known, and the user can easily perform the sludge removal work.

On the bottom surface of the purified water tank 3, there is a second sludge reservoir 19 for depositing sludge, and a sludge discharge pipe 13 having a second partition valve 22 for removing the sludge deposited in the second sludge reservoir 19.
have. The side surface of the second sludge reservoir 19 is made of a visible and substantially transparent member.

From this, the condition of sludge accumulation can be understood,
Users can easily remove sludge. The bottom surface of the purified water tank 3 penetrates the bottom surface of the second sludge reservoir 19, and the upper end is slightly higher than the bottom surface of the purified water tank 3.
A water pipe 20 having a third sluice valve 32 is provided at the lower end. This water pipe 20 is used when water is used in the garden, or when the water supply cannot be used due to a disaster or the like, and when it is desired to use water below the portion where the water flows from the purified water tank 3 to the second water pipe 50.

[0025]

According to the first aspect of the present invention, since the sludge tray has a substantially concave shape and is attached to the bottom, sludge easily accumulates inside the sludge tray and contamination inside the purification unit can be reduced. The maintenance period can be extended.

The invention of claim 2 can be easily performed by the user himself or herself by operating the first sluice valve of the sludge discharge pipe when discharging the sludge. Further, most of the sludge contained in the stored water can be discharged by the sludge discharge pipe of the storage water tank, so that the sludge flowing into the purification unit is drastically reduced. Therefore, it is possible to reduce the contamination inside the purification unit and to expect the effect of extending the maintenance period and eventually extending the life. Further, even if purified by the purification unit, a small amount of mixed sludge can be accumulated and eliminated, so that the quality of the purified water used is naturally improved.

According to the third aspect of the present invention, since the upper end of the water distribution pipe is located above the bottom surface of the purified water tank, even if the second sluice valve of the water distribution pipe is opened, sludge will not flow out. .

In the invention of claim 4, since the sludge accumulation condition inside the sludge reservoir can be visually observed from the transparent portion,
Know when to remove sludge.

[Brief description of the drawings]

FIG. 1 shows a cross-sectional view of a rainwater utilization apparatus of the present invention.

FIG. 2 shows an α arrow view of the rainwater utilization system of the invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along the line CC of FIG. 1;

FIG. 6 is a sectional view taken along line DD of FIG. 1;

[Explanation of symbols]

 1 ... Rainwater Utilization Device 2 ... Reservoir Water Tank 3 ... Purification Water Tank 4 ... Purification Unit 11 ... Sludge Reservoir at Bottom of Reservoir Water Tank 19 ... Sludge Reservoir at Bottom of Purification Water Tank

Claims (4)

[Claims] 1. A storage water tank for storing rainwater, a purification unit located below the storage water tank for purifying water in the storage water tank, and a purification unit located below the purification unit and purified by the purification unit. In a rainwater utilization device having a purified water tank for storing water, a rainwater utilization device is provided with a concave sludge accumulating portion at the bottom of at least one of the storage water tank and the purified water tank. 2. A sludge discharge pipe communicating with the sludge reservoir,
The rainwater utilization apparatus according to claim 1, further comprising a first partition valve that connects and disconnects the sludge discharge pipe. 3. A water distribution pipe that penetrates through the bottom of the sludge reservoir and has an upper opening that is at least higher than the bottom surface of the purified water tank, and a second sluice valve that connects and disconnects the water distribution pipe. The rainwater utilization device according to claim 1 or 2, characterized in that. 4. The rainwater utilization device according to claim 1, wherein at least a part of a side surface of the sludge reservoir is made transparent.